Airtac SAIF Series Standard Cylinder with Valve SAIF50X500S-08B
The AirTAC Airtac SAIF Series Standard Cylinder with Valve SAIF50X500S-08B is a genuine double-acting ISO 15552 cylinder with a Ø50mm bore, 500mm stroke and a built-in 4M210-08 5/2 solenoid valve — it switches itself from one coil signal, so no separate remote valve or extra plumbing is needed.
- BoreØ50 mm
- Stroke500 mm
- Built-in valve4M210-08
- Valve port1/4"
- CoilDC24V
- EntryTerminal
About the Airtac SAIF Series Standard Cylinder with Valve SAIF50X500S-08B
The AirTAC SAIF50X500S-08B is a double-acting ISO 15552 profile cylinder equipped with a built-in 4M210-08 5/2 solenoid valve, providing a Cv of 0.89. Driven by a DC24V terminal coil consuming 3.0 W, it eliminates the need for a remote valve island. The integrated manifold uses O8 x O5 PU tubing to bridge the valve and cylinder, drastically reducing plumbing across decentralized machine stations. Because the valve limits the system, the practical operating pressure is 0.15-0.8 MPa, despite the cylinder body rating of 1.0 MPa.
Delivering 982 N of push force at 0.5 MPa, this 50 mm bore unit includes an -S magnet for CMSE reed and DMSE electronic sensors. By default, the piston rod retracts when the coil is energised, but you can reconfigure it to extend-when-energised by repositioning the valve. The carbon steel rod and tapered PT threads ensure robust, leak-free operation.
Airtac SAIF Series Standard Cylinder with Valve SAIF50X500S-08B Technical Specifications
| Model | Airtac SAIF Series Standard Cylinder with Valve SAIF50X500S-08B |
|---|---|
| Series | SAIF ISO 15552 cylinder with valve |
| Bore size | Ø50 mm |
| Stroke | 500 mm |
| Acting type | Double acting, self-valved |
| Cylinder port | G1/4 |
| Rod thread | M16×1.5 |
| PU tube | Ø8 × Ø5 |
| Built-in valve | 4M210-08 (5/2) |
|---|---|
| Valve flow | 16.0 mm² (Cv 0.89) |
| Max frequency | 5 cycle/sec |
| Coil voltage | DC24V · DC 3.0 W |
| Electrical entry | Terminal · IP65 · B class |
| Response time | 0.05 s and below |
| Operating pressure | 0.15 – 0.8 MPa (valve limit) |
| Speed range | 30 – 800 mm/s |
The cylinder rates to 1.0 MPa but the built-in valve operates 0.15–0.8 MPa, so run the assembled SAIF at 0.15–0.8 MPa. Default: rod retracts when the coil is energised (reconfigurable to extend). Specs follow the official AirTAC SAIF datasheet. Port options: PT / G.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
Sized within the valve's 0.15–0.8 MPa range. Actual usable force is lower than theoretical due to friction and back-pressure.
Model Code: Airtac SAIF Series Standard Cylinder with Valve SAIF50X500S-08B
| SAIF | ISO 15552 cylinder with built-in 4M valve. |
|---|---|
| 50×500 | Bore × stroke in mm. |
| -08 | Valve port 1/4" → 4M210-08. |
| B | Coil voltage DC24V. |
| I / (blank) | Terminal electrical entry. |
SAIF does not hold its load without air — the valve routes air, it is not a lock. For load-holding use a SAIL (lock) or BSAI (clamp-lock).
Where the Airtac SAIF Series Standard Cylinder with Valve SAIF50X500S-08B Is Used
Decentralized Automation
Ideal for large-scale factory equipment where routing individual valve lines is costly, letting each cylinder switch itself via a single DC24V signal.
Material Handling
Provides 982 N of push force at 0.5 MPa for diverting or sorting items on a conveyor line, with the 5/2 valve ensuring a fast 5 cycles per second.
Space-Tight Retrofits
Perfect for upgrading older machines where panel space is full, as the built-in valve and manifold remove the need for external pneumatic plumbing.
Is the Airtac SAIF Series Standard Cylinder with Valve SAIF50X500S-08B the Right Choice?
Choose this self-valved SAIF model when installing decentralized actuators across large machines, as it saves significant panel space and wiring compared to running separate cylinder lines to a remote valve. If your application requires less force, stepping down to a 40 mm bore yields 628 N push at 0.5 MPa; for heavier loads, a 63 mm bore provides 1559 N. For this 500 mm stroke, adding an external guide is recommended to prevent excessive side-load on the rod seals.
To replace this unit, match the 50 mm bore, 500 mm stroke, 1/4" valve port (08 code), DC24V terminal coil, and PT thread. Remember that the 5/2 valve routes air but does not lock the load mechanically—use an AirTAC SAIL lock cylinder if position holding without live pressure is required.
Quick checklist
- ✓ Force at 0.15–0.8 MPa
- ✓ Coil voltage matches panel
- ✓ Terminal vs grommet entry
- ✓ Retract- or extend-when-energised
- ✓ Load-holding → SAIL / BSAI
Airtac SAIF Series Standard Cylinder with Valve SAIF50X500S-08B FAQ
The 50 mm bore cylinder generates 982 N of push force at 0.5 MPa. The integrated 4M210-08 5/2 valve has an effective area of 16.0 mm2 (Cv 0.89) and supports a maximum frequency of 5 cycles per second.
It uses a DC24V terminal coil (3.0 W, IP65) to switch the cylinder directly. By factory default, energising the coil retracts the rod, but this can be reconfigured to extend-when-energised by repositioning the valve. This eliminates the need for a separate remote valve.
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